18186151448 has 32 divisors (see below), whose sum is σ = 34217586000. Its totient is φ = 9061507200.

The previous prime is 18186151441. The next prime is 18186151463. The reversal of 18186151448 is 84415168181.

It is a super-2 number, since 2×18186151448² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18186151441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4911998 + ... + 4915698.

Almost surely, 2^18186151448 is an apocalyptic number.

It is an amenable number.

18186151448 is a deficient number, since it is larger than the sum of its proper divisors (16031434552).

18186151448 is a wasteful number, since it uses less digits than its factorization.

18186151448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5675 (or 5671 counting only the distinct ones).

The product of its digits is 245760, while the sum is 47.

The spelling of 18186151448 in words is "eighteen billion, one hundred eighty-six million, one hundred fifty-one thousand, four hundred forty-eight".